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Title: Coherent chemical kinetics as quantum walks. II. Radical-pair reactions in Arabidopsis thaliana
Authors: Chia, A.
Górecka, Agnieszka
Kurzyński, P.
Paterek, T.
Kaszlikowski, D.
Keywords: Reaction Kinetics
Arabidopsis Thaliana
Issue Date: 2016
Source: Chia, A., Górecka, A., Kurzyński, P., Paterek, T., & Kaszlikowski, D. (2016). Coherent chemical kinetics as quantum walks. II. Radical-pair reactions in Arabidopsis thaliana. Physical Review E, 93(3), 032408-. doi:10.1103/PhysRevE.93.032408
Series/Report no.: Physical Review E
Abstract: We apply the quantum-walk approach proposed in the preceding paper [A. Chia et al., preceding paper, Phys. Rev. E 93, 032407 (2016)] to a radical-pair reaction where realistic estimates for the intermediate transition rates are available. The well-known average hitting time from quantum walks can be adopted as a measure of how quickly the reaction occurs and we calculate this for varying degrees of dephasing in the radical pair. The time for the radical pair to react to a product is found to be independent of the amount of dephasing introduced, even in the limit of no dephasing where the transient population dynamics exhibits strong coherent oscillations. This can be seen to arise from the existence of a rate-limiting step in the reaction and we argue that in such examples, a purely classical model based on rate equations can be used for estimating the time scale of the reaction but not necessarily its population dynamics.
ISSN: 2470-0045
DOI: 10.1103/PhysRevE.93.032408
Schools: School of Physical and Mathematical Sciences 
Rights: © 2016 American Physical Society (APS). This paper was published in Physical Review E and is made available as an electronic reprint (preprint) with permission of American Physical Society (APS). The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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